Convolvulus fruticosus Pall., Reise Russ. Reich. 2: 734. 1773. (Pallas 1773: 734).

Wood, John R. I., Williams, Bethany R. M., Mitchell, Thomas C., Carine, Mark A., Harris, David J. & Scotland, Robert W., 2015, A foundation monograph of Convolvulus L. (Convolvulaceae), PhytoKeys 51, pp. 1-282 : 155-156

138. Convolvulus fruticosus Pall., Reise Russ. Reich. 2: 734. 1773. (Pallas 1773: 734). Figure 18, t. 1-9

Convolvulus fruticans Pall., Reise Russ. Reich. 2: 474. 1773, lapsus [spelling mistake] for Convolvulus fruticosus Pall. ( Pallas 1773: 74).

Convolvulus spinosus Desr., Encycl. [Lamarck et al.] 3: 548. 1792, nom. illeg., non Convolvulus spinosus Burm.f. (1768). ( Desrousseaux 1792: 548). Type. RUSSIA, Siberia, Irtib River, Patrin s.n. (holotype P).

Convolvulus eichwaldii Boiss., Diagn. Pl. Orient. 7: 27. 1846. ( Boissier 1846: 27). Type. TAJIKISTAN (?). Tjuk-Karagan, Eichwald s.n. (whereabouts unknown).

Convolvulus frutescens Pall. ex Ledeb., Fl. Ross. (Pallas) 3: 88 (1847), lapsus [spelling mistake] for Convolvulus fruticosus Pall. ( Ledebour 1847: 88)

Convolvulus brevispinus Jaub. & Spach, Ill. Pl. Orient. 4: 106. 1852. ( Jaubert and Spach 1852: 106). Type. IRAN, Shiraz, Aucher-Eloy 4937 (holotype P).

Type.

RUSSIA, Irtysh, Pallas s.n. (lectotype BM 0010145880, designated here, isolectotypes BM 0010145879, BM 0010145881, BM 0010145882, LE!, W!).

Description.

Intricately branched spiny shrub to 50 cm, stems adpressed pubescent. Leaves sessile, 1-3.5 × 0.3-0.6 cm, oblong to narrowly oblong-elliptic, acute, margin entire, base cuneate, adpressed-pubescent to sericeous; cauline spines abundant on young shoots. Flowers borne on short spinescent axillary peduncles, usually solitary, sometimes up to 3 in a diachasial cyme; peduncles 12 mm, spine-like; bracteoles 9-11 × 1-2 mm, linear to linear-elliptic; pedicels 2 mm, recurved; sepals very lax, outer sepals 10-11 × 3-6 mm, elliptic or rhomboid, acute to mucronate, densely pubescent; inner sepals much shorter, 7-8 mm long; corolla 2.3-2.5 cm long, pink, somewhat undulate, midpetaline bands darker pink, adpressed pilose; ovary and style pilose; style divided 7 mm above the base, stigmas 3 mm long. Capsule pilose; seeds puberulous. [ Sa’ad 1967: 66: Austin and Ghazanfar 1979: 13; Nowroozi 2002: 29 (plate), 100 (map)]

Distribution.

China (fide Fang and Staples 1997: 290); Mongolia (Grabov 5514, Przewalski 48); Russia: Siberia; Kazakhstan (Schiskin s.n. [10/7/1937], Ianatov & Kuznetzov s.n. [13/6/1956], Pojarkova 417, Spiridonow s.n. [1914]); Kyrgyzstan (Dessiatoff 1759); Uzbekistan (Kamelin et al. 589); Tadjikistan (Botchantsev 237, Browicz 76); Turkmenistan (Borissova 3768b, Rodin et al. 205); Afghanistan (Aitchison 418; Koie 4413); Iran (Schmidt 6150; Merton 3943, Andersen & Jensen 2100, Rechinger 5502).